gcages.cmip7_scenariomip.pre_processing.reaggregation

Reaggregation of timeseries from raw reporting to sectors needed for gridding

The idea here is that we receive raw data following some variable specification Based on this, we reaggregate to the variables needed for gridding (see gcages.cmip7_scenariomip.gridding_emissions). In order to do the reaggregation sensibly, two things must be true:

1. all the timeseries we require must be there
2. the data must be internally consistent
   • including consideration of any optional timeseries

Reaggregation is a data problem i.e. the hard part is making sure that the data we receive matches our data model. As a result, the code is highly coupled with the data we expect (writing general solutions is hard). This is why we have written the code that supports each data model in a standalone module, rather than trying to write a general solution (which was extremely difficult when we tried to do it that way from the start, we think because it creates couplings which are incredibly difficult to reason through).

Modules:

Name	Description
basic	Basic reaggregation
common	Common components used across different re-aggregation strategies

Classes:

Name	Description
ReaggregatorBasic	Reaggregator that follows this module's logic
ToCompleteResult	Result of calling to_complete on a reaggregator

ReaggregatorBasic

Reaggregator that follows this module's logic

Methods:

Name	Description
assert_has_all_required_timeseries	Assert that the data has all the required timeseries
assert_is_internally_consistent	Assert that the data is internally consistent
default_tols_internal_consistency	Get default tolerances for internal consistency checks
get_internal_consistency_checking_index	Get the index which selects only data relevant for checking internal consistency
to_complete	Convert the raw data to complete data
to_gridding_sectors	Re-aggregate data to the sectors used for gridding

Attributes:

Name	Type	Description
internal_consistency_tolerances	Mapping[str, InternalConsistencyCheckingTolerance]	Tolerances to apply when checking the internal consistency of the data
model_regions	tuple[str, ...]	Model regions to use while reaggregating
region_level	str	Region level in the data index
unit_level	str	Unit level in the data index
variable_level	str	Variable level in the data index
world_region	str	The value used when the data represents the sum over all regions

Source code in src/gcages/cmip7_scenariomip/pre_processing/reaggregation/basic.py

@define
class ReaggregatorBasic:
    """
    Reaggregator that follows this module's logic
    """

    model_regions: tuple[str, ...]
    """Model regions to use while reaggregating"""

    region_level: str = "region"
    """Region level in the data index"""

    unit_level: str = "unit"
    """Unit level in the data index"""

    variable_level: str = "variable"
    """Variable level in the data index"""

    world_region: str = "World"
    """
    The value used when the data represents the sum over all regions

    (Having a value for this is odd,
    there should really just be no region level when data is the sum,
    but this is the data format used so we have to follow this convention.)
    """

    internal_consistency_tolerances: Mapping[
        str, InternalConsistencyCheckingTolerance
    ] = field()
    """
    Tolerances to apply when checking the internal consistency of the data
    """

    @internal_consistency_tolerances.default
    def default_tols_internal_consistency(
        self,
    ) -> Mapping[str, InternalConsistencyCheckingTolerance]:
        """
        Get default tolerances for internal consistency checks
        """
        return get_default_internal_conistency_checking_tolerances()

    def assert_has_all_required_timeseries(self, indf: pd.DataFrame) -> None:
        """
        Assert that the data has all the required timeseries

        Parameters
        ----------
        indf
            Data to check

        Raises
        ------
        NotCompleteError
            `indf` is not complete
        """
        assert_has_all_required_timeseries(
            indf,
            model_regions=self.model_regions,
            world_region=self.world_region,
            region_level=self.region_level,
            variable_level=self.variable_level,
        )

    def assert_is_internally_consistent(self, indf: pd.DataFrame) -> None:
        """
        Assert that the data is internally consistent

        Parameters
        ----------
        indf
            Data to check

        Raises
        ------
        InternalConsistencyError
            The data is not internally consistent
        """
        assert_is_internally_consistent(
            indf,
            model_regions=self.model_regions,
            tolerances=self.internal_consistency_tolerances,
            world_region=self.world_region,
            region_level=self.region_level,
            unit_level=self.unit_level,
            variable_level=self.variable_level,
        )

    def get_internal_consistency_checking_index(self) -> pd.MultiIndex:
        """
        Get the index which selects only data relevant for checking internal consistency

        Returns
        -------
        :
            Internal consistency checking index
        """
        return get_internal_consistency_checking_index(
            model_regions=self.model_regions,
            world_region=self.world_region,
            region_level=self.region_level,
            variable_level=self.variable_level,
        )

    def to_complete(self, raw: pd.DataFrame) -> ToCompleteResult:
        """
        Convert the raw data to complete data

        Parameters
        ----------
        raw
            Raw data

        Returns
        -------
        :
            To complete result
        """
        return to_complete(
            indf=raw,
            model_regions=self.model_regions,
            unit_level=self.unit_level,
            variable_level=self.variable_level,
            region_level=self.region_level,
            world_region=self.world_region,
        )

    def to_gridding_sectors(self, indf: pd.DataFrame) -> pd.DataFrame:
        """
        Re-aggregate data to the sectors used for gridding

        Parameters
        ----------
        indf
            Data to re-aggregate

        Returns
        -------
        :
            Data re-aggregated to the gridding sectors
        """
        return to_gridding_sectors(
            indf=indf, region_level=self.region_level, world_region=self.world_region
        )

internal_consistency_tolerances class-attribute instance-attribute

internal_consistency_tolerances: Mapping[
    str, InternalConsistencyCheckingTolerance
] = field()

Tolerances to apply when checking the internal consistency of the data

model_regions instance-attribute

model_regions: tuple[str, ...]

Model regions to use while reaggregating

region_level class-attribute instance-attribute

region_level: str = 'region'

Region level in the data index

unit_level class-attribute instance-attribute

unit_level: str = 'unit'

Unit level in the data index

variable_level class-attribute instance-attribute

variable_level: str = 'variable'

Variable level in the data index

world_region class-attribute instance-attribute

world_region: str = 'World'

The value used when the data represents the sum over all regions

(Having a value for this is odd, there should really just be no region level when data is the sum, but this is the data format used so we have to follow this convention.)

assert_has_all_required_timeseries

assert_has_all_required_timeseries(indf: DataFrame) -> None

Assert that the data has all the required timeseries

Parameters:

Name	Type	Description	Default
indf	DataFrame	Data to check	required

Raises:

Type	Description
NotCompleteError	indf is not complete

Source code in src/gcages/cmip7_scenariomip/pre_processing/reaggregation/basic.py

def assert_has_all_required_timeseries(self, indf: pd.DataFrame) -> None:
    """
    Assert that the data has all the required timeseries

    Parameters
    ----------
    indf
        Data to check

    Raises
    ------
    NotCompleteError
        `indf` is not complete
    """
    assert_has_all_required_timeseries(
        indf,
        model_regions=self.model_regions,
        world_region=self.world_region,
        region_level=self.region_level,
        variable_level=self.variable_level,
    )

assert_is_internally_consistent

assert_is_internally_consistent(indf: DataFrame) -> None

Assert that the data is internally consistent

Parameters:

Name	Type	Description	Default
indf	DataFrame	Data to check	required

Raises:

Type	Description
InternalConsistencyError	The data is not internally consistent

Source code in src/gcages/cmip7_scenariomip/pre_processing/reaggregation/basic.py

def assert_is_internally_consistent(self, indf: pd.DataFrame) -> None:
    """
    Assert that the data is internally consistent

    Parameters
    ----------
    indf
        Data to check

    Raises
    ------
    InternalConsistencyError
        The data is not internally consistent
    """
    assert_is_internally_consistent(
        indf,
        model_regions=self.model_regions,
        tolerances=self.internal_consistency_tolerances,
        world_region=self.world_region,
        region_level=self.region_level,
        unit_level=self.unit_level,
        variable_level=self.variable_level,
    )

default_tols_internal_consistency

default_tols_internal_consistency() -> Mapping[
    str, InternalConsistencyCheckingTolerance
]

Get default tolerances for internal consistency checks

Source code in src/gcages/cmip7_scenariomip/pre_processing/reaggregation/basic.py

@internal_consistency_tolerances.default
def default_tols_internal_consistency(
    self,
) -> Mapping[str, InternalConsistencyCheckingTolerance]:
    """
    Get default tolerances for internal consistency checks
    """
    return get_default_internal_conistency_checking_tolerances()

get_internal_consistency_checking_index

get_internal_consistency_checking_index() -> MultiIndex

Get the index which selects only data relevant for checking internal consistency

Returns:

Type	Description
MultiIndex	Internal consistency checking index

Source code in src/gcages/cmip7_scenariomip/pre_processing/reaggregation/basic.py

def get_internal_consistency_checking_index(self) -> pd.MultiIndex:
    """
    Get the index which selects only data relevant for checking internal consistency

    Returns
    -------
    :
        Internal consistency checking index
    """
    return get_internal_consistency_checking_index(
        model_regions=self.model_regions,
        world_region=self.world_region,
        region_level=self.region_level,
        variable_level=self.variable_level,
    )

to_complete

to_complete(raw: DataFrame) -> ToCompleteResult

Convert the raw data to complete data

Parameters:

Name	Type	Description	Default
raw	DataFrame	Raw data	required

Returns:

Type	Description
ToCompleteResult	To complete result

Source code in src/gcages/cmip7_scenariomip/pre_processing/reaggregation/basic.py

def to_complete(self, raw: pd.DataFrame) -> ToCompleteResult:
    """
    Convert the raw data to complete data

    Parameters
    ----------
    raw
        Raw data

    Returns
    -------
    :
        To complete result
    """
    return to_complete(
        indf=raw,
        model_regions=self.model_regions,
        unit_level=self.unit_level,
        variable_level=self.variable_level,
        region_level=self.region_level,
        world_region=self.world_region,
    )

to_gridding_sectors

to_gridding_sectors(indf: DataFrame) -> DataFrame

Re-aggregate data to the sectors used for gridding

Parameters:

Name	Type	Description	Default
indf	DataFrame	Data to re-aggregate	required

Returns:

Type	Description
DataFrame	Data re-aggregated to the gridding sectors

Source code in src/gcages/cmip7_scenariomip/pre_processing/reaggregation/basic.py

def to_gridding_sectors(self, indf: pd.DataFrame) -> pd.DataFrame:
    """
    Re-aggregate data to the sectors used for gridding

    Parameters
    ----------
    indf
        Data to re-aggregate

    Returns
    -------
    :
        Data re-aggregated to the gridding sectors
    """
    return to_gridding_sectors(
        indf=indf, region_level=self.region_level, world_region=self.world_region
    )

ToCompleteResult

Result of calling to_complete on a reaggregator

Attributes:

Name	Type	Description
assumed_zero	DataFrame | None	The timeseries that were assumed to be zero to make self.complete
complete	DataFrame	Complete pd.DataFrame

Source code in src/gcages/cmip7_scenariomip/pre_processing/reaggregation/common.py

@define
class ToCompleteResult:
    """
    Result of calling `to_complete` on a reaggregator
    """

    complete: pd.DataFrame
    """Complete [pd.DataFrame][pandas.DataFrame]"""

    assumed_zero: pd.DataFrame | None
    """
    The timeseries that were assumed to be zero to make `self.complete`

    If `None`, no timeseries were assumed to be zero.
    """

assumed_zero instance-attribute

assumed_zero: DataFrame | None

The timeseries that were assumed to be zero to make self.complete

If None, no timeseries were assumed to be zero.

complete instance-attribute

complete: DataFrame

Complete pd.DataFrame